High-strength three-layer co-extrusion durable shed film and preparation method thereof

A high-strength, shed film technology, applied in the field of agricultural shed film, can solve the problems of difficult to obtain comprehensive performance agricultural shed film, reduce the tensile and tear properties of the shed film, affect the comprehensive performance of the shed film, etc., and achieve enhanced photosynthesis. efficiency, increase crop yield, and the effect of superior cost performance

Active Publication Date: 2019-01-04
YUNNAN QUJING PLASTICS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improving the current agricultural shed film to overcome defects such as single function, fast additive migration, short life, and low strength has become a key problem that needs to be solved urgently to solve the development of the shed film industry and expand the greenhouse planting area.
[0003] In order to solve the above problems, the existing agricultural shed films are mainly devoted to the research of functional shed films, but these shed films often affect the overall performance of the shed film when improving a single function, such as adding some specific functional additives to A shed film with certain functions can be obtained, but the introduction of additives will often reduce the compatibility between materials, reduce the tensile and tear properties of the shed film, and it is difficult to obtain an agricultural shed film with excellent comprehensive properties

Method used

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  • High-strength three-layer co-extrusion durable shed film and preparation method thereof
  • High-strength three-layer co-extrusion durable shed film and preparation method thereof
  • High-strength three-layer co-extrusion durable shed film and preparation method thereof

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preparation example Construction

[0043] The second aspect of the present invention provides a method for preparing the above-mentioned high-strength greenhouse film, comprising the following steps:

[0044] (1) Mix various raw materials according to the ratio of outer, middle and inner layers of 1:1:1, and stir for 15 minutes to ensure that the various raw materials are mixed evenly;

[0045] (2) Put the mixed raw materials into the hoppers of the outer, middle and inner layer three hosts respectively; the three hosts are continuously extruded into the composite die head with the outer, middle and inner three-layer spiral flow channels, and the molten resin Flow out according to their respective spirals and converge at the die mouth to form a three-layer composite tube blank;

[0046] (3) The stretched tube blank is blown to the required bubble diameter by the air supply of the high-pressure fan; then it is cooled and shaped by the blowing of the outer layer, and the shaped film bubble reaches V through the f...

Embodiment 1

[0051] Embodiment 1 provides a high-strength greenhouse film, the high-strength greenhouse film is a three-layer composite structure made by a co-extrusion blown film machine, including an inner layer, a middle layer and an outer layer; the inner layer, the middle layer The total weight ratio of the preparation raw material and the outer layer is 1:1:1; the preparation raw material of each layer of the three-layer composite structure contains polyethylene-based high-performance polymer.

[0052] The raw materials for preparing the outer layer, in parts by weight, include

[0053]

[0054] The raw materials for preparing the inner layer are the same as those for the outer layer.

[0055] Described polyethylene-based high-performance polymer is the polyethylene (density of 0.916g / m2) that Exxon Mobil brand is XP6026ML 3 , melt index is 0.2g / 10min); said linear low density polyethylene is Exxon Mobil brand is LL1001 (density is 0.918g / m 3 , melt index is 1.0g / 10min); the low...

Embodiment 2

[0065] Embodiment 2 provides a high-strength greenhouse film, the high-strength greenhouse film is a three-layer composite structure made by a co-extrusion blown film machine, including an inner layer, a middle layer and an outer layer; the inner layer, the middle layer The total weight ratio of the preparation raw material and the outer layer is 1:1:1; the preparation raw material of each layer of the three-layer composite structure contains polyethylene-based high-performance polymer.

[0066] The raw materials for preparing the outer layer, in parts by weight, include

[0067]

[0068] The raw materials for preparing the inner layer are the same as those for the outer layer.

[0069] Described polyvinyl high-performance polymer is the polyethylene-based high-performance polymer-based high-performance polymer of XP6026ML model (density is 0.916g / m 3 , melt index is 0.2g / 10min); said linear low density polyethylene is Exxon Mobil brand is LL1001 (density is 0.918g / m 3 , ...

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Abstract

The invention relates to the field of agricultural she films, in particular to a high-strength three-layer co-extrusion durable shed film and a preparation method thereof. The high-strength shed filmis of a three-layer composite structure made through a co-extrusion blow molding shed film machine set, and comprises an inner layer, a middle layer and an outer layer; the total weight ratio of the inner layer to the middle layer to the outer layer is 1:1:1; preparation raw materials of each layer of the three-layer composite structure include a high-performance polyvinyl polymer.

Description

technical field [0001] The invention relates to the field of agricultural shed film, in particular to a high-strength three-layer co-extruded durable shed film and a preparation method thereof. Background technique [0002] China is a large agricultural country, and agricultural film has played an important role in improving the yield and quality of crops, shortening the growth cycle of crops, and enriching and improving people's living standards. After decades of rapid development, especially in recent years, my country's greenhouse film has greatly improved in performance, quality, and production technology, and is developing in the direction of high performance, multi-function, specialization, serialization, and comprehensive technology integration. . In recent years, the greenhouse film is more and more developed towards the synchronization of life and function, long-term anti-aging, long-term dripping and defogging, diffuse scattering and light conversion, and specializ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/30B32B27/32A01G9/14C08L23/08C08L23/06B29C48/18
CPCA01G9/1438C08L23/0815B29C49/04B32B27/08B32B27/306B32B27/32B32B2307/54B32B2307/558B32B2307/5825B32B2307/412B32B2270/00B32B2250/03B32B2250/40B32B2410/00C08L2205/035C08L2205/025C08L2207/066B29C49/071B29C2949/08C08L23/06C08L23/0853Y02A40/25
Inventor 卢斌卢建书汤云安王建桥王宗方
Owner YUNNAN QUJING PLASTICS GROUP
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